console.log("常东东")
namespace Home{
class Header {
    constructor() {
      const elem = document.createElement("div");
      elem.innerText = "This is Header";
      document.body.appendChild(elem);
    }
  }
  
  class Content {
    constructor() {
      const elem = document.createElement("div");
      elem.innerText = "This is Content";
      document.body.appendChild(elem);
    }
  }
  
  class Footer {
    constructor() {
      const elem = document.createElement("div");
      elem.innerText = "This is Footer";
      document.body.appendChild(elem);
    }
  }
  
  namespace Home {
    export class Page {
      constructor() {
        new Components.Header();
        new Components.Content();
        new Components.Footer();
      }
    }
  }


}
